Small Satellite Launch Vehicle
Small Satellite Launch Vehicle (or SSLV) is a launch vehicle being developed by the Indian Space Research Organisation (ISRO) with payload capacity of 500 kg to Low Earth orbit or 300 kg to Sun synchronous orbit for launching small satellites, with the capability to support multiple orbital drop-offs. On 21 December 2018, the Vikram Sarabhai Space Centre (VSSC) at Thumba completed the design for the vehicle. According to the director of VSSC, S.Somanath, the maiden flight is expected to be no earlier than December 2019 from Satish Dhawan Space Centre.
|Country of origin||India|
|Cost per launch||₹30 crore (US$4.3 million) |
|Payload to 500x500 km orbit, i=45°||500 kilograms (1,100 lb)|
|Payload to SSO||300 kilograms (660 lb)|
|First stage – S85|
|Second stage – S7|
|Third stage – S4|
After entering the operational phase, the vehicle's production and launch operation is expected to be done by a consortium of Indian firms along with New Space India Limited from an alternate launch site.
SSLV was developed with the aim of launching small satellites commercially at drastically reduced price and higher launch rate as compared to PSLV. The manufacturing cost of SSLV is expected to be ₹30 crore (US$4.3 million).
The projected high launch rate relies on largely autonomous launch operation and on overall simple logistics. To compare, a PSLV launch involves 600 officials while SSLV launch operations would be managed by a small team of about six people. The launch readiness period of SSLV is expected to be less than a week instead of months. The launch vehicle can be assembled both vertically like the existing PSLV and GSLVs and horizontally like the decommissioned SLV and ASLV.
The first three stages of the vehicle use solid propellant, with a fourth stage being a velocity-trimming module.
- Height: 34.0 meters
- Diameter: 2.0 meters
- Mass: 120 tonnes
|Date / time (UTC)||Rocket,
|December 2019||SSLV||First||Indian military satellite (500 kg) ||LEO|
|SSLV-D1, First developmental flight|
|No earlier than November 2019||SSLV||First||Global-5, Global-6, Global-7, Global-8||LEO||Spaceflight Industries|
|SSLV-D2, Second developmental flight carrying four 56 kg Blacksky Global satellites to ~500 km circular orbit with 50° inclination.|
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A study has been carried out to identify suitable locations for establishment of a launch pad for the small satellite launch vehicle. It was found that the locations in the western sea coast near Gujarat did not meet some of the criteria for establishing the launch pad.
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- Kumar, Chethan (12 August 2018). "Isro aims to launch 22 missions in 2019; 50 in 3 years". TNN. Retrieved 2 September 2018.
- D.s, Madhumathi (7 August 2019). "ISRO's mini launcher SSLV is unborn but has 2 flights booked". The Hindu. ISSN 0971-751X. Retrieved 16 August 2019.
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- "Application for Earth Exploration Satellite Service by BlackSky Global, LLC" (PDF). FCC. 25 July 2019. p. 6. Archived from the original (PDF) on 28 July 2019. Retrieved 28 July 2019.
Global-5 through Global-8 are currently scheduled to be launched in November 2019 on a Small Satellite Launch Vehicle (SSLV) by the Indian Space Research Organization from its Satish Dhawan Space Center.